We've all been there: that existential moment when the thought of getting in a car and literally fleeing the confines of one's own life seems extraordinarily appealing. The impulse usually passes.

Not so for the protagonist of Big Significant Things, however. The new comedy, premiering as part of the Visions program at SXSW, follows the road-tripping adventures of Craig, a guy in his mid-20s who abandons a fairly decent if uneventful existence in order to find himself among the "world's largest" tourist traps dotting the Deep South.

In this exclusive trailer premiere, does the man who plays the film's peripatetic hero -- actor Harry Lloyd -- look familiar? Try picturing him with shoulder-length, platinum blonde hair. Nothing? Now imagine a vat of molten gold being poured over his head.

That's right: The 30-year-old Lloyd is perhaps best known for playing the shrill, hateful Viserys Targaryen in the first season of HBO's Game of Thrones. Born and raised in London, Lloyd is also the great-great-great-grandson of Charles Dickens. (But you'll be hard-pressed to detect even a whiff of a British accent here.)

Writer-director Bryan Reisberg, a graduate of NYU film school, says he admires the "humanist American films" of the 1970s and cites films like Five Easy Pieces and Hal Ashby's The Landlord as inspiration. Big Significant Things has its world premiere at SXSW on Sat., March 8 at 4:30 p.m. at the Violet Crown Cinema.